1 /* 2 * Copyright 2014 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs <bskeggs@redhat.com> 23 */ 24 #include "priv.h" 25 26 static int 27 nvkm_ltc_tags_alloc(struct nvkm_ltc *ltc, u32 n, struct nvkm_mm_node **pnode) 28 { 29 struct nvkm_ltc_priv *priv = (void *)ltc; 30 int ret; 31 32 ret = nvkm_mm_head(&priv->tags, 0, 1, n, n, 1, pnode); 33 if (ret) 34 *pnode = NULL; 35 36 return ret; 37 } 38 39 static void 40 nvkm_ltc_tags_free(struct nvkm_ltc *ltc, struct nvkm_mm_node **pnode) 41 { 42 struct nvkm_ltc_priv *priv = (void *)ltc; 43 nvkm_mm_free(&priv->tags, pnode); 44 } 45 46 static void 47 nvkm_ltc_tags_clear(struct nvkm_ltc *ltc, u32 first, u32 count) 48 { 49 const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc); 50 struct nvkm_ltc_priv *priv = (void *)ltc; 51 const u32 limit = first + count - 1; 52 53 BUG_ON((first > limit) || (limit >= priv->num_tags)); 54 55 impl->cbc_clear(priv, first, limit); 56 impl->cbc_wait(priv); 57 } 58 59 static int 60 nvkm_ltc_zbc_color_get(struct nvkm_ltc *ltc, int index, const u32 color[4]) 61 { 62 const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc); 63 struct nvkm_ltc_priv *priv = (void *)ltc; 64 memcpy(priv->zbc_color[index], color, sizeof(priv->zbc_color[index])); 65 impl->zbc_clear_color(priv, index, color); 66 return index; 67 } 68 69 static int 70 nvkm_ltc_zbc_depth_get(struct nvkm_ltc *ltc, int index, const u32 depth) 71 { 72 const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc); 73 struct nvkm_ltc_priv *priv = (void *)ltc; 74 priv->zbc_depth[index] = depth; 75 impl->zbc_clear_depth(priv, index, depth); 76 return index; 77 } 78 79 int 80 _nvkm_ltc_init(struct nvkm_object *object) 81 { 82 const struct nvkm_ltc_impl *impl = (void *)nv_oclass(object); 83 struct nvkm_ltc_priv *priv = (void *)object; 84 int ret, i; 85 86 ret = nvkm_subdev_init(&priv->base.base); 87 if (ret) 88 return ret; 89 90 for (i = priv->base.zbc_min; i <= priv->base.zbc_max; i++) { 91 impl->zbc_clear_color(priv, i, priv->zbc_color[i]); 92 impl->zbc_clear_depth(priv, i, priv->zbc_depth[i]); 93 } 94 95 return 0; 96 } 97 98 int 99 nvkm_ltc_create_(struct nvkm_object *parent, struct nvkm_object *engine, 100 struct nvkm_oclass *oclass, int length, void **pobject) 101 { 102 const struct nvkm_ltc_impl *impl = (void *)oclass; 103 struct nvkm_ltc_priv *priv; 104 int ret; 105 106 ret = nvkm_subdev_create_(parent, engine, oclass, 0, "PLTCG", 107 "l2c", length, pobject); 108 priv = *pobject; 109 if (ret) 110 return ret; 111 112 memset(priv->zbc_color, 0x00, sizeof(priv->zbc_color)); 113 memset(priv->zbc_depth, 0x00, sizeof(priv->zbc_depth)); 114 115 priv->base.base.intr = impl->intr; 116 priv->base.tags_alloc = nvkm_ltc_tags_alloc; 117 priv->base.tags_free = nvkm_ltc_tags_free; 118 priv->base.tags_clear = nvkm_ltc_tags_clear; 119 priv->base.zbc_min = 1; /* reserve 0 for disabled */ 120 priv->base.zbc_max = min(impl->zbc, NVKM_LTC_MAX_ZBC_CNT) - 1; 121 priv->base.zbc_color_get = nvkm_ltc_zbc_color_get; 122 priv->base.zbc_depth_get = nvkm_ltc_zbc_depth_get; 123 return 0; 124 } 125